Low volatility
Good retention in film and fiber processing.
SUNSORB® 327
UV-327 Benzotriazole UV Absorber Supplier
SUNSORB® 327 (UV-327) is a low-volatility chlorinated benzotriazole UV absorber used in polyolefin film, fiber and other plastics. UV-327 is listed as a Substance of Very High Concern under EU REACH, so check your market before ordering.
CAS 3864-99-1 · Benzotriazole · UV absorber
- Lot de COA avec chaque expédition
- Des échantillons pour vos essais
- Support technique pour votre essai
Présentation du produit & avantages clés
UV-327 (2,4-di-tert-butyl-6-(5-chloro-2H-benzotriazol-2-yl)phénol) has low volatility and good compatibility in polyolefins. Because of its REACH status, many EU buyers have moved to alternatives such as UV-326, 329 ou 234. Outside the EU it remains in use; we confirm the rules for your destination before quoting.
Polyolefin compatibility
Used in PP and PE film and fiber.
Alternatives available
If 327 is restricted in your market we can propose and supply a replacement.
Spécifications techniques
| Paramètre | Valeur typique |
|---|---|
| Nom du produit | UV Absorber UV-327 |
| Marque | SUNSORB® 327 |
| Numéro CAS. | 3864-99-1 |
| Nom chimique | 2,4-Di-tert-butyl-6-(5-chloro-2H-benzotriazol-2-yl)phénol |
| Formule moléculaire | C20H24ClN3O |
| Masse moléculaire | 357.9 |
| Apparence | Light-yellow powder |
| Point de fusion | 154–158 °C |
| Essai | ≥99% |
| Matière volatile | ≤0,5% |
Spécification typique. Chaque envoi est fourni avec un COA de lot; les limites applicables à votre commande sont confirmées dans le devis et le contrat.
Applications by Material
Pick an application to see how 327 is normally used and what to confirm before your trial.
PP & PE Film and Fiber
Low-volatility UV absorber for thin sections.
Vérifiez avant l'essai
- Destination market and REACH status
- Film or fiber gauge
- HALS used
Polyolefin Parts
UV protection in molded polyolefins.
Vérifiez avant l'essai
- Destination market
- Part thickness
- Target weathering life
Replacing UV-327
For EU and other restricted markets, 326, 329 ou 234 are common replacements depending on polymer and process.
Vérifiez avant l'essai
- Current loading of 327
- Polymer and processing temperature
- Weathering test to re-qualify
Sélection & comparaison
Selecting a UV Absorber
| Votre exigence | Ce qui fonctionne habituellement |
|---|---|
| Clear or light-colored polyolefin parts and film | Benzophenone (531) or benzotriazole (326) at low loading |
| High processing temperature (PC, ANIMAUX, Pennsylvanie) | Low-volatility grades: 234, 360 or 1577-type triazines |
| Thin films and fibers | Higher-MW, low-volatility grades so the absorber is not lost in processing |
| Solvent-borne and waterborne coatings | Liquid benzotriazoles (384-2, 1130) or triazine (400), paired with a HALS |
| Outdoor service longer than one season | UV absorber plus a HALS; the absorber filters, the HALS stops radical chains |
| Exports to the EU | Check REACH status first; some benzotriazoles (327, 328) are restricted |
| Remplacement d'une note existante | Envoyez votre TDS ou COA actuel; we match on chemistry and the parameters you approve |
UV Absorber Comparison
Faites glisser ou faites défiler horizontalement pour voir toutes les colonnes →
| Produit | Chemistry | Mol. poids | Point de fusion / form | Best fit |
|---|---|---|---|---|
| SUNSORB® 327 | Benzotriazole (CL) | 357.9 | 154–158 °C | PP, PE film and fiber (check REACH) |
| SUNSORB® 326 | Benzotriazole (CL) | 315.8 | 138–141 °C | PP, PE, PVC, adhésifs |
| SUNSORB® 234 | Benzotriazole | 447.6 | 137–141 °C | PC, ANIMAUX, PA at high temperature |
| SUNSORB® 329 | Benzotriazole | 323.4 | 103–105 °C | PC, ANIMAUX, PVC, PMMA |
| LUMIÈRE DU SOLEIL® 944 | Polymeric HALS | Mn 2000–3100 | Granule or powder | PP/PE film, tape, fibre |
Définissez les niveaux dans votre propre essai. Loading depends on part thickness, pigment, target service life and the HALS used alongside. UV absorbers and HALS work by different mechanisms and are usually combined.
Emballage & stockage
Emballage
25 kg net bags or cartons with a PE inner liner. Palletized.
Stockage
Keep sealed in a cool, sec, ventilated place away from heat and direct sun. See the SDS for full handling details.
Délai de mise en œuvre & terms
Regular grades are usually in stock. For large volumes, lead time is confirmed in the quotation. We quote FOB and CIF.
Du premier e-mail à la fourniture approuvée
Define the exposure
Indoor light behind glass, outdoor temperate climate and desert or tropical exposure need very different packages. Note the target service life and the weathering test you use (xenon or QUV, heures, ΔE or gloss retention).
Match absorber to process and thickness
A UV absorber works by filtering, so it needs enough path length: thick parts need less, thin films and fibers need more and need a low-volatility grade. Check the absorber survives your processing temperature.
Combine with a HALS
For outdoor use the standard approach is UV absorber plus HALS. Send your current package and pigment system and we suggest a starting combination for the trial.
Check regulations before you buy
Some benzotriazoles are restricted in the EU and other markets. Tell us the destination and end use, and we confirm the REACH and food-contact position of the grade before you order.
Dites-nous votre besoin. Nous correspondons à la note.
Start with your material, épaisseur de la pièce, quantité et destination. Add your current UV package and we will quote against it.
| Information | Exemple |
|---|---|
| Polymer / Material | PP, PE, abdos, composé, mélange maître |
| Application | Injection molding, extrusion, film, fibre |
| Current additive | Grade or supplier you use today |
| Spécification requise | Your TDS, COA or key limits |
| Quantité | Commande à l'essai / mensuel / volume annuel |
| Emballage | Standard 25 kg or specific requirement |
| Destination | Pays et port |
| Documents nécessaires | COA, FDS, ATTEINDRE, food-contact statement |
Produits associés
SUNSORB® 326
Chlorinated benzotriazole UV absorber for polyolefins, PVC and adhesives.
Voir le produit →LUMIÈRE DU SOLEIL® 944
Polymeric HALS for PP and PE film, tape and fiber with low volatility.
Voir le produit →UV Absorber UV-327 FAQ
Can I use UV-327 in products sold in the EU?
UV-327 is a REACH SVHC and subject to authorisation, so EU use is heavily restricted. Tell us your market and we confirm the position and suggest an alternative if needed.
What can replace UV-327?
UV-326 is the closest in performance in polyolefins; 329 et 234 are alternatives depending on polymer and temperature. A weathering re-test is needed.
How much SUNSORB® 327 dois-je ajouter?
Le niveau dépend de votre polymère, épaisseur de la pièce, autres additifs et conditions d'essai, alors mets-le dans ton propre essai. La TDS est disponible sur demande.
Puis-je obtenir un échantillon avant de commander?
Oui. Tell us the polymer, the test you plan to run and the quantity you need. Samples ship with a COA so you can compare the lot against your current material.
Que se passe-t-il si un COA ne correspond pas à nos spécifications convenues ??
Send us the agreed specification and the COA showing the difference (parameter, unité et méthode de test). We check it with the production batch record before you accept the material, and replace or re-test where the lot is out of specification.
